Still missing something - I have done that, but its not storing it. Does it know that that sessionName value is the InsertID, for does that need a reference somewhere else?
I have line 81:
$WA_sessionName = "NewUserID";
and line 778:
<input type="hidden" name="UserIDIT" id="UserIDIT" value="<?php echo($_SESSION['NewUserID']); ?>" />